How do you control hydrangea color?
Hydrangeas are unique in that you can control their color. But keep in mind, not all hydrangea types are capable of color adjustments. Bigleaf hydrangeas, H. macrophylla, react to changes in soil pH. A low soil pH allows hydrangeas to absorb aluminum, which turns the flowers a beautiful blue color. To increase blue hydrangea flowers, lower your soil pH by adding sulfur or peat moss to the soil. You can also add additional aluminum sulfate to your soil throughout the growing season. Pink and red flowers shine when you add ground limestone to increase the pH.
A soil pH test can help you accurately adjust your hydrangea color. Avoid pH levels above 7.5 to prevent damage to the plant. No matter what adjustments you’ve made, all hydrangeas will naturally fade in the fall. Don’t worry – the plant will showcase fresh, colorful blooms again in the spring
Lisa s Everyday Life